Power Consumption

Intel has a full process node advantage when you compare Ivy Bridge and Trinity, as a result of that plus an architectural efficiency advantage you just get much better power consumption from the Core i3 than you do with Trinity. Idle power is very good but under heavy CPU load Trinity consumes considerably more power. You're basically looking at quad-core Ivy Bridge levels of power usage under load but performance closer to that of a dual-core Ivy Bridge. AMD really needs a lot of design level efficiency improvements to get power consumption under control. Compared to Llano, Trinity is a bit more efficient it seems so there's an actual improvement there.

Power Consumption - Idle

Power Consumption - Load (x264 HD 5.0.1 2nd Pass)

Of course on the processor graphics side the story is much closer with Trinity being a bit more power hungry than Ivy Bridge, but not nearly by this margin.

Overclocking & Power Consumption Final Words
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  • wenbo - Tuesday, October 2, 2012 - link

    I think for real enthusiasts building a gaming PC is going to cost 750 to 850 dollars + what ever display you buy. AMD's FX-8150 seems to be really good. it's currently sold for 189 dollars less 20 promotion. And the combo is $502.00 + about 200 graphics and 100 SSD + 30 dollar fan give an acceptable gaming PC for less than 850 (with some savings power supply and case give you about $70 off, which means a total of $780) And an equivalent Intel I5, you pay for non-usable HD graphics is going to be about 50 to 70 dollars more expensive (on the processor and motherboard).

    The difference is on processor is really not that much without much of a promotion on A10-5800K, $169 vs $122. The savings would be on graphics, the best one you can get is HD6670 (I think you can only hybrid crossfire on this), which is $70 after rebate. So the difference is about 180 dollars. and motherboard is cheaper, at 80 dollars, That means you have an entry level gaming PC for a little more than $600 ($607 according to above numbers).

    With similar configuration getting a intel i3-2100 is 119.99 at newegg + 129.99 motherboard + 70 graphics + 150ssd + 50 case + 50 power + 55 memory gives you 624.98 ( you don't need a fan, because you CANNOT overclock i3s).

    So there is really not much of a difference.
  • wenbo - Tuesday, October 2, 2012 - link

    It would be good to know the price for each of the PC build that was bench marked.
  • owlxp - Tuesday, October 2, 2012 - link

    Your math seems a bit off here:

    i3-2100 set up:
    cpu - 120
    mobo - 130
    gpu - 70
    ssd - 150
    case - 50
    psu - 50
    memory - 55
    total = 625

    trinity 5800k set up:
    apu - 130
    mobo - 60
    ssd - 150
    case - 50
    psu - 50
    memory - 55
    total = 495

    If we're talking entry level gaming...........I'll take trinity and the extra $130
  • wenbo - Wednesday, October 3, 2012 - link

    I meant if you want trinity, don't you want crossfire? So that is 70 dollars at most. And A10 is unlocked that means overclocking, so you need a bigger fan which is 30 dollars. Motherboard is a bit more than 60 dollars, at least I couldn't find one that cheap.

    But I bet you are right, as soon as the holiday season motherboard price will drop to 80 - 90 dollars. If you don't care about overclocking, that's another 30, and yes, you can play most games in medium to low settings with respectable framerate without crossfire.

  • Tech-Curious - Friday, November 2, 2012 - link

    Why are you paying $130 for a motherboard to be used in a budget i3 rig? Do you really intend to pair a locked, budget CPU with a z77 chipset? Grab up a B75 for $60-70.

    I realize that AMD-chipset motherboards have a long-standing reputation for cost-efficiency relative to their Intel counterparts, but the facts just don't conform with that reputation right now.

    I'm also not sure why you're paying $55 for memory; I grabbed up a pair of 4GB DDR3 1600 Kingston modules a week or so ago for $30 on Newegg. Granted, that was a sale price, but the same modules are only $40 normally. In fact, if we're to compare apples to apples, the memory subsystem will tend to cost you more on current-gen AMD platforms because the AMD platform wants for higher-speed memory.

    (I am, of course, assuming that you're using USA-market pricing. If not, I apologize, but I still don't see why you think it's fair to compare a random AMD bundle deal against your seemingly hat-picked price scheme for a comparable Intel box. There are bundle deals for Intel products too.)

    For what it's worth, the build I just ordered about a week ago (mostly from newegg, unfortunately the shipping's been delayed by Hurricane Sandy) consists of the following:

    Intel Core i3 3220 - $100 (in-store pickup deal at Microcenter)
    ASUS P8B75-M (B75 chipset) - $70
    HIS Radeon HD 7850 (1 GB version) - $165
    2*4GB Kingston HyperX XMP DDR3 1600 (cas 9) - $30 with discount promo code
    Seasonic M12II 520 Bronze power supply - $69
    Intel 330 SSD 240GB - $180
    Windows 7 x64 Home Premium - $80 with discount promo code
    Random cheapo DVD drive - $15

    Total - 709

    Granted, I didn't buy a case because I already have one. Granted, I found a number of limited-time deals. I also splurged (a lot) more than your average budget builder on the SSD and power supplies. (For me, finally, the extra convenience of the larger SSD was worth going over budget by a fair amount. I'm also a shameless fanboy of Seasonic power supplies, and I like to have a little extra power head room.)

    I'm sure more savvy system builders could do more with the money I spent, too. The only reason I'm laying out what I bought is to give people an idea of what can be done if you're willing to hunt around a bit and be patient. You can wring a great deal of performance out of either an AMD or Intel system on a pretty tight budget.

    Sorry for the mini novel.
  • Tech-Curious - Friday, November 2, 2012 - link

    Check this out, for a budget Intel bundle, btw:


    Intel Core i3-3220 Dual-Core, Gigabyte GA-B75M-D3V Motherboard, Mushkin DDR3 8GB Memory, Mushkin 120GB SSD, Gigabyte ATX Mid Tower Case, Rosewill 400W PSU SuperCombo
  • Bob Todd - Tuesday, October 2, 2012 - link

    Looking through the narrow lens of A10 vs i3, I would absolutely choose Trinity since it fits my needs better. However, there is no upward scalability and there never will be. With LGA 1155 you could start with a < $50 Sandy Bridge based Celeron G530. You can go from there to any price/performance point up to an i7-3770K for $329. Then there's the enormous LGA 1155 motherboard footprint. Newegg has 254 LGA 1155 motherboards listed right now! That kind of competition has put a lot of downward pressure on pricing.

    Even for a cheap HTPC build I'm not sure I could justify an FM2 build vs. LGA 1155, the market is just flooded too heavily in Intel's favor giving you so many options to repurpose whatever you build. Trinity just doesn't make sense for me on a desktop. Mobile Trinity where I won't ever upgrade the CPU/GPU...now I've got something to get excited about. In smaller form factors without room for a discrete GPU (somewhere between 10" and 13"), they could have a very competitive product. Give me an X230 successor with Trinity and a 1080p IPS panel and I'll throw money at you.
  • owlxp - Tuesday, October 2, 2012 - link

    Well AMD did promise to keep the FM2 socket for their gen 3 cpus. I think Trinity is good enough to get you to 2014. If the gains in the next gen apu's are anything like what we saw from llano to trinity, that extra $130 I saved in going with the trinity build now, just paid for my upgrade a couple years from now.

    However, I completely get where you're coming from. I'm struggling with the same problem as I prepare for my next upgrade.
  • Aone - Tuesday, October 2, 2012 - link

    We have been hearing many times from AMD that iGPU inside APU are so powerful that they would kill off cheap dGPU. That what I have expected to see in the review: Pentium+cheap dGPU vs. APU(w/o dGPU).

    As to cheap prices for APU, we have to keep in mind that 1155 MBs are ~20$ cheaper than FM2 MBs, and APU systems need faster and therefore more expensive RAM than Pentium+d.GPU systems. to get better GPU performance.
  • mikato - Wednesday, October 3, 2012 - link

    It will get there in time. I suggest you check how fast the iGPU performance has grown with AMD's APUs. And they're just getting started. You know they do make high end GPUs and now they've proven they can put their GPUs on die with the CPU, so they will be putting this tech into their APUs.

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